<template>
    <div>
        <!-- 面包屑区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片区域 -->
        <el-card class="box-card">
             <!-- 添加角色按钮 -->
            <el-row>
                <el-col>
                <el-button type="primary" @click="AddRoleDialogVisible=true">添加角色</el-button>
                </el-col>
            </el-row>
            <!-- 角色列表 -->
            <el-table :data="roleslist" border stripe>
                <!-- 展开列 -->
                <el-table-column type="expand">
                <template slot-scope="scope">
                    <el-row
                    :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
                    v-for="(item1, i1) in scope.row.children"
                    :key="item1.id"
                    >
                    <!-- 一级权限 -->
                    <el-col :span="5">
                        <el-tag closable @close="removeRightById(scope.row, item1.id)">{{ item1.authName}}</el-tag>
                        <i class="el-icon-caret-right"></i>
                    </el-col>
                    <!-- 二级和三级 -->
                    <el-col :span="19">
                        <!-- 通过for循环 渲染二级权限 -->
                        <el-row
                        :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                        v-for="(item2, i2) in item1.children"
                        :key="item2.id"
                        >
                        <el-col :span="6 ">
                            <el-tag
                            type="success"
                            closable
                            @close="removeRightById(scope.row, item2.id)"
                            >{{ item2.authName }}</el-tag>
                            <i class="el-icon-caret-right"></i>
                        </el-col>
                        <el-col :span="18">
                            <el-tag
                            type="warning"
                            v-for="(item3) in item2.children"
                            :key="item3.id"
                            closable
                            @close="removeRightById(scope.row, item3.id)"
                            >{{ item3.authName}}</el-tag>
                        </el-col>
                        </el-row>
                    </el-col>
                    </el-row>
                </template>
                </el-table-column>
                    <el-table-column
                        type="index"
                        label="#">
                    </el-table-column>
                    <el-table-column
                        prop="roleName"
                        label="角色名称">
                    </el-table-column>
                    <el-table-column
                        prop="roleDesc"
                        label="角色描述">
                    </el-table-column>
                    <!-- 操作按钮 -->
                    <el-table-column
                        label="操作">
                        <template slot-scope="scope">
                            <el-button
                            size="medium"
                            class="el-btn"
                            @click="editRoleVisible = true,getEditRole(scope.row.id)">编辑</el-button>
                            <el-button
                            size="medium"
                            type="danger"
                            class="el-btn"
                            >删除</el-button>
                            <el-button
                            type="warning"
                            icon="el-icon-setting"
                            size="mini"
                            @click="showSetRightDialog(scope.row)"
                            >分配权限</el-button>
                        </template>
                    </el-table-column>
                </el-table>
        </el-card>
        <el-dialog
        title="修改角色信息"
        :visible.sync="editRoleVisible"
        width="50%"
        >
        <!-- 内容主体 -->
        <el-form
            :model="editRoleForm"
            ref="editRoleFormRef"
            :rules="editRoleFormRules"
            label-width="70px"
        >
            <el-form-item label="角色名称" prop="roleName">
            <el-input v-model="editRoleForm.roleName" disabled></el-input>
            </el-form-item>
            <el-form-item label="角色描述" prop="roleDesc">
            <el-input v-model="editRoleForm.roleDesc"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editRoleVisible = false">取 消</el-button>
            <el-button type="primary" @click="editRoles()">确定修改</el-button>
        </span>
     </el-dialog>
        <!-- 分配权限 -->
        <el-dialog
        title="分配权限"
        :visible.sync="setRightDialogVisible"
        width="50%"
        @close="setRightDialogClosed"
        >
        <el-tree
            :data="rightsList"
            :props="treeProps"
            ref="treeRef"
            show-checkbox
            node-key="id"
            default-expand-all
            :default-checked-keys="defKeys"
        ></el-tree>
        <span slot="footer" class="dialog-footer">
            <el-button @click="setRightDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="allotRights">确 定</el-button>
        </span>
        </el-dialog>
        <!-- 添加角色对话框 -->
        <el-dialog title="添加角色" :visible.sync="AddRoleDialogVisible" width="40%" @close="addRoleDialogClosed">
        <el-form
            :model="addRoleForm"
            ref="addRoleFormRef"
            :rules="addRoleFormRules"
            label-width="100px"
        >
            <el-form-item label="角色名称" prop="roleName">
            <el-input v-model="addRoleForm.roleName"></el-input>
            </el-form-item>
            <el-form-item label="角色描述" prop="roleDesc">
            <el-input v-model="addRoleForm.roleDesc"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="AddRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addRoles">确 定</el-button>
        </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    created() {
        // 获取角色列表
        this.getRolesList()
    },
    data() {
        return {
            roleslist: [],
            // 分配权限框
            setRightDialogVisible: false,
            // 权限列表
            rightsList: [],
            //  树形控件的属性绑定对象
            treeProps: {
                label: 'authName',
                children: 'children'
            },
            //   默认选中节点ID值
            defKeys: [],
            //   添加用户对话框
            AddRoleDialogVisible: false,
            // 添加角色表单
            addRoleForm: {},
            //   添加角色表单验证
            addRoleFormRules: {
                roleName: [
                { required: true, message: '请输入角色名称', trigger: 'blur' }
                ],
                roleDesc: [
                { required: true, message: '请输入角色描述', trigger: 'blur' }
                ]
            },
            // 编辑角色数据
            editRoleVisible: false,
            editRoleForm: {},
            editRoleFormRules: {
            roleName: [
                { required: true, message: '请输入角色名称', trigger: 'blur' }
            ],
                roleDesc: [
                { required: true, message: '请输入角色描述', trigger: 'blur' }
            ]
        },
        }
    },
    methods: {
        // 获取角色列表
        async getRolesList() { 
           const {data : res} = await this.$http.get('roles')
           if(res.meta.status !== 200) {
                this.$message({
                    message: res.meta.msg,
                    type: 'error'
                }) 
            } else {
                this.$message({
                    message: res.meta.msg,
                    type: 'success'
                }) 
            }
            this.roleslist = res.data
            console.log(this.roleslist);
        },
        // 根据ID删除对应的权限
        async removeRightById (role, rightId) {
        // 弹框提示 删除
        const confirmResult = await this.$confirm(
        '此操作将永久删除该权限, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      // 点击确定 返回值为：confirm
      // 点击取消 返回值为： cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消权限删除')
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      )
      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败！')
      }
      role.children = res.data
    },
      // 分配权限
      async showSetRightDialog (role) {
      this.roleId = role.id
      // 获取角色的所有权限
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败！')
      }
      //   获取权限树
      this.rightsList = res.data
      //   console.log(res)
      //   递归获取三级节点的id
      this.getLeafkeys(role, this.defKeys)

      this.setRightDialogVisible = true
        },
        // 通过递归 获取角色下三级权限的 id, 并保存到defKeys数组
        getLeafkeys (node, arr) {
        // 没有children属性，则是三级节点
        if (!node.children) {
            return arr.push(node.id)
        }
        node.children.forEach(item => this.getLeafkeys(item, arr))
        },
        // 权限对话框关闭事件
        setRightDialogClosed () {
        this.defKeys = []
        },
        // 添加角色对话框的关闭
        addRoleDialogClosed () {
        this.$refs.addRoleFormRef.resetFields()
        },
        // 添加角色
        addRoles () {
        this.$refs.addRoleFormRef.validate(async valid => {
            if (!valid) return
            const { data: res } = await this.$http.post('roles', this.addRoleForm)
            if (res.meta.status !== 201) {
            this.$message.error('添加角色失败！')
            }
            this.$message.success('添加角色成功！')
            this.AddRoleDialogVisible = false
            this.getRolesList()
        })
        },
        // 删除角色
        async removeRoleById (id) {
        const confirmResult = await this.$confirm(
            '此操作将永久删除该角色, 是否继续?',
            '提示',
            {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }
        ).catch(err => err)
        if (confirmResult !== 'confirm') {
            return this.$message.info('已取消删除')
        }
        const { data: res } = await this.$http.delete('roles/' + id)
        if (res.meta.status !== 200) return this.$message.error('删除角色失败！')
        this.$message.success('删除用户成功！')
        this.getRolesList()
        },
        // 编辑角色
        async getEditRole(id) {
            const {data : res} = await this.$http.put('roles/' + id)
            if (res.meta.status !== 200) {
                return this.$message.error('查询角色信息失败！')
            }
            this.editRoleForm = res.data
            this.editRoleVisible = true
        },
         editRoles () {
            // 提交请求前，表单预验证
            this.$refs.editRolesFormRef.validate(async valid => {
                // console.log(valid)
                // 表单预校验失败
                if (!valid) return
                const { data: res } = await this.$http.put(
                'oles/' + this.editRolesForm.id,
                {
                    email: this.editRolesForm.email,
                    mobile: this.editRolesForm.mobile
                }
                )
                if (res.meta.status !== 200) {
                this.$message.error('更新用户信息失败！')
                }
                // 隐藏添加用户对话框
                this.editDialogVisible = false
                this.$message.success('更新用户信息成功！')
                this.getRolesList()
            })
        },
        // editDialogClos
         // 分配权限
        async allotRights (roleId) {
        // 获得当前选中和半选中的Id
        const keys = [
            ...this.$refs.treeRef.getCheckedKeys(),
            ...this.$refs.treeRef.getHalfCheckedKeys()
        ]
        // join() 方法用于把数组中的所有元素放入一个字符串
        const idStr = keys.join(',')
        const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
        if (res.meta.status !== 200) { return this.$message.error('分配权限失败！') }
        this.$message.success('分配权限成功!')
        this.getRolesList()
        this.setRightDialogVisible = false
        }
    }
    
}
</script>

<style lang="less" scoped>

</style>